John howard



J HOWARD PADDLE WHEEL FOR STBAMERS.

(No Model.)

No. 481,668. Patented Aug. 30, 1892.

EEEEE UNITED STATES PATENT OFFICE.

JOHN HOWARD, OF FARNWORTH, NEAR BOLTON, ASSIGNOR TO THE GON- OAVE PADDLE WHEEL COMPANY, LIMITED, OF LIVERPOOL, ENGLAND.

PADDLE-WHEEL FOR STEAM ERS.

SPECIFICATION forming part of Letters Patent No. 481,668, dated August 30, 1892.

Application filed January 9, 1892. Serial No- 4=17,597. (No model.) Patented in England June 24, 1890, No. 9,760.

To all whom it may concern: \Vhen made with double concave faces, the Be it known that I, JOHN HOWARD, contwo parts of the float are tied together by tractor, a subject of the Queen of Great Britangle-irons or stays d, and can be fixed in ain, residing at Farnworth, near Bolton, in the place by riveting the stays to the radial arms 5 county of Lancaster, England, have invented of the Wheel; or,if desired, the double convex certain new and useful Improvements in Padfaces can be made in one piece, in which case dle-Wheels for Steamers, (for which 1 have the ribs d, Fig. 6, are riveted to the radial received Letters Patent in Great Britain, No. arms 0 of the wheel. I have described these 9,760, dated June 24, 1890,) of which the folways of constructing the channeled or con- 1o lowing is a specification. cave paddles; but it is obvious that, once This invention relates to paddle-wheels for given the general idea, various ways of fastensteamers, and has for its object certain iming the floats to the paddle-wheel or of conprovements in the form or construction of the structing the double floats may be devised.

paddles or floats whereby friction is mini- When the improved paddle-wheel is in op- 15 mized and the propelling power of the wheels eration, the points a, Fig. 1, enter the Water is increased. first, and by the time the concave surface of In carrying the invention into effect I form the float comes into contact with the water the paddles or floats with channeled or conthe points a, have a firm grasp of the water caved striking-surfaces. These can be either and effectively prevent the enormous slip 7o 20 single or double, the latter producing an efcommon to the ordinary flat float. The confect that will cause a backward motion of the cave floats will not lift the water, as when paddle-wheel to be as powerful as a forward they leave the water the points b leave first motion. I and form a cutting process, and what little Referring to the accompanying drawings, Water there is to lift is thrown out by the 15 in which corresponding letters of reference speed of the Wheel. These concave or gutterindicate like parts, Figure 1 is a front elevashaped floats can be employed in conjunction tion of the paddle-wheel of a steamer fitted with a feathering motion, if desired. with single floats or paddles with channeled I declare that what I claim is or concaved striking-surfaces; Fig. 2, a sec- 1. As an improvement in paddle-wheels for 0 tion of a single float or paddle; Figs. 3 and 4, steam-vessels, the combination, with the rasections of other forms of single floats or paddial arms of the wheel arranged in pairs, of dles with concaved striking-surfaces; Fig. 5, paddles or floats having concave or channeled a section of a double float or paddle with striking-surfaces and provided at their rear channeled or concaved striking-surfaces and sides with parallel securing wings or lugs, the

3 5 secured together by means of angle-irons, and latter being adapted to contact with and be Fig. (5 a section of a double float or paddle secured to said arms, substantially as and for formed in one piece. the purpose set forth.

In the figures, A is the paddle-wheel; B, the 2. As an improvement in paddle-wheels for shaft on which the paddle-wheelis secured; O, steam-vessels, the combination, with the ra- 40 the floats or paddles with channeled or con dial arms of the wheel arranged in pairs, of caved striking-surfaces adapted to strike the concave or channeled floats provided at their water in such a manner as to cause the grip rear sides With parallel securing wings or lugs to be much firmerthan thatobtained bythe orfitting between the pairs of said arms, subdinary flat or feathering floats. The floats C stantially as and for the purpose set forth. 5

5 are provided with the flanges D, by which In testimony whereof I have signed my they are secured to the radial arms of the name to this specification in the presence of paddle-wheel by means of rivets, bolts, or the two subscribing witnesses.

like, or they may be formed without flanges JOHN HOWARD and bolted or riveted directly onto the arms. Witnesses:

50 They are made single,'as shown in Figs. 1, 2, G. O. DYMoND,

3, and 4, or double, as shown in Figs. 5 and 6. H. P. SHOOBRIDGE. 

